Owner's Manual for Thern TSSBW Spur Gear Hand Winches
page 12
A10191-0309
3.3.4
Instructions for Periodic Inspection, see table 1.
a
VISUALLY INSPECT the winch and all other equipment.
• Disassembly may be required in order to properly inspect individual com-
ponents. Contact factory for assembly/disassembly instructions. Disassem-
bly of the winch or brake before contacting Thern, Inc. voids all warranties.
• Check the fi nish for wear, fl aking, or other damage.
• Check all equipment, including wire rope for cracks, dents, bending, rust,
wear, cor ro sion and other damage. If the winch was overloaded, or if
you notice cracks and other signs of overloading and damage promptly
remove equipment from use and have it repaired or replaced.
DO NOT
CONTINUE TO USE DAMAGED OR OVERLOADED EQUIP-
MENT OR WIRE ROPE.
• Check all fasteners for stripped threads, wear, bending, and other dam age.
• Check the foundation for cracks, corrosion, and other damage.
• Make sure the winch and brake are properly lubricated.
• Make sure all labels and plates are readable, fi rmly attached, free of dam-
age and clean. Replacements are available from the factory.
b
REMOVE THE WIRE ROPE entirely from the drum.
• Always wear protective clothing when handling wire rope.
• Check the entire length of wire rope for bent wires, crushed areas, bro ken
or cut wires, corrosion, and other damage. Care ful ly inspect areas that
pass over sheaves or through roller guides.
• Note the location and concentration of broken wires. Replace wire rope if
more than 6 wires are broken in one lay, or more than 3 wires are broken
in one strand in one lay. See fi gure 6.
• Make sure the load hook or other device is securely attached to the wire
rope, and the wire rope where it is attached is not frayed, cor rod ed, bro-
ken, or otherwise damaged.
• Measure the throat opening, thickness, and twist of the hook. Re place the
hook if it shows signs of damage. See fi gure 7.
• Make sure hook latch opens without binding and closes when re leased.
• Check the anchor holes in the drum fl ange for signs of wear or dis tor tion.
c
PLACE enough weight to keep the wire rope straight and tightly drawn.
• Measure the diameter of the wire rope, especially in areas where wear
is noticeable. Replace the wire rope if the diameter measures below the
min i mum diameter at any point. See fi gure 8.
d
REMOVE THE WINCH from the foundation.
• Check fasteners for stripped threads, wear, bends, and other damage.
• Check the frame for bending, distortion, cracks and other dam age. A bent
frame is caused by over load ing, and is a sign that your application may
require a winch with a larger load rating.
e
MOVE THE DRUM with your hands.
• Check for excessive movement indicating worn or loose gears, bear ings,
or shafts.
f
FASTEN THE WINCH securely to the foundation.
Perform periodic inspections:
• Every 6 months.
• Whenever you return the winch
to service from storage.
• Whenever you notice damage
or poor operation in a frequent
in spec tion.
• Whenever you have, or think you
may have, overloaded or shock
loaded the winch.
Figure 6 – Broken Wires
wire
strand
one
lay
Wire rope assembly must be re-
placed if more than 6 wires are
bro ken in one lay, or if more than
3 wires are broken in one strand
in one lay.
Figure 7 – Load Hook
Inspection
throat
opening
twist
thick ness
The wire rope assembly must be
replaced if the throat opening is
15% wider than nominal, if the
thick ness is 10% less than nomi-
nal, or if the hook is twisted 10° or
more.